วีดีโอ

Great information, thank you

Hello Rob, Thanks a lot for the review of my Harness Prototype. Looking forward to seeing it running on one of your engines soon. Don`t be afraid to bend it in the reinforced area between the main connector and the first branching point. I did several torture tests with the first prototype, and it handled a lot of abuse without issues. And yes, you are correct about the connectors. Only the main connector is 3D printed out of reinforced nylon and converts the harness to a circular shape with a strain relief lip. The EV1 connectors are from Tyco (made in the USA). The yellow cap’s purpose is simply to keep dirt and dust out of the connectors until ready to be plugged in. The other "Beta Tester" reported good results and is very happy with the performance of the engine now. Sale will start in about 3 weeks with 3 sleeving options. DR-25 "race-spec inspired" as shown by you, Green Nomex high temp sleeving for an extra slim and sleek professional look and HFT5000 for a more textured appearance than DR-25. Of course, all components used on the harness including the used TEFZEL wire have a minimum continuous temp rating of 150°C. So you can look forward to decades of trouble free operation. It is designed as a "lifetime" harness. The Price is not final yet, but expect it to match SNG price for a, as mentioned by you, a much superior and fully shielded product. Andreas / AE Engineering AE-Engineering@bluewin. ch

Hello, is there any way to buy AE engineering cables, I am from Germany Bavaria and would like one of these.

The mystery hoses are probably from the 1995 XJ12 V-12 i have... Ford Era ... Wasted spark... I have more crapola too.. that was just from one engine... i have 2 more engines worth of leftovers... i can send them along someday once this project is done and i know what is not needed

I think the mystery hoses are PCV hoses for the later XJ40/X300 era I6. It looks very similar the the one on my '96 4.0 XJS but my son is out of town with my '95 X300 so I can't be sure.

Looks great the main plug looks solid Good idea with the big heat shrink You would think back then they Would have seal those better Since it the main connecter British Layland cutting corners.

Good point. I’m gonna be sticking the harness on a test stand engine in a Tuesday extra in the next couple of weeks and I’ll mention that point.

Nice! Christmas in October…!

I was really impressed with Andreas's concept too. One thing that needs mentioning is under that shrink wrap is TEFZEL wire!!! And if you know motorsports wire-jacketing - That is essentially Milspec / Avionics quality jacketing/wire. It won't degrade in the heat /oil like the old PVC (or whatever jacket was on the old OE wires).

Used it in my 98 F150 , working 💪 perfectly

I like the Mail Call idea. Looks like a good harness!!

A+

Just found your channel. Awesome stuff!!

Many Thanks for the valuable content. So good the videos are but improvement I would like see: missing some structure for the video collection. For example now the two (2) Marelli paths, looking for successive video, what happened to these two issues? Possibly still in editing work, however, cannot be sure. Thanks again!

This stuff sprays so poorly that you'd have to use 12 cans just to do a roof of a land cruiser.

Are the plans available? if so, where? Thanks in advance

tilton should get you to do the video! liked your diagrams, helped a ton. Thanks.

lol@12 min WHAT IS THE MAX CAMSHAFT LIFT you can put in this???? a detail. hmm the BASE circle on the camshaft will support a.500 lobe?@21.30 WHAT is shrouding the valve? The 5.3 intake ports- xke/xjs are SIZED for a 7 liter engine. aka Jaguar never downsized the ports when they reduced the cubic inches from 427 to 326.@22 min. lol and wtf too- HOW are you going to make the HE head competitive when there is NO SHORT TURN in the exhaust port? So you got 60%? or 70% of int. flow out of the HE PORT???? hmmm there is NO SHORT TURN. Why because the ex vale is sunk .300? lol IF YOU TRY TO MAKE MORE THEN 375 hp with the HE head you will break the engine. Why because the HE head has 2 FLAME FRONTS. As you make more power the combustion becomes TO0 VIOLENT- you will see for yourself. A far better deal is to put a dish- maybe zero to .060 in the xke head and a matching dish in a modern lightweight piston. but I am sure you call me a moron- lol goo luck- you will need it.

Very well done. Excellent coverage!

As an owner of a Pre-He, this is cool and super interesting!!!

Fascinating stuff👍

That TWR combustion chamber looks Like a pre HE chamber already Charles Servedio has video Of an over view of V12 heads He could help you work Some magic with those heads Along with some input from David Vizzard

Holy poop Bob,, that was fantastic.. numbers don't lie.. the big question now is how do you make a HE head better.. Everyone puts money on the pre-HE.. my sons 86 xjs of course is HE, and he thinks we can get 5 to 600 hp.. I told him ,, impossible,, when did sons listen to their fathers.. lol.. Mobeck has some crazy Pre-HE heads, big valves, crazy guides, springs and pulling 196 cfm @ .393,, 141 cfm @ 12.5 mm(.473) exhaust.. dor 4700 usd. Your numbers are good..

Hey Bob. I'm a bit confused (again). The head from the TWR 6.1 appears to be a flat head. Are the valves any larger then a stock 5.3? Your track car is a pre HE or a HE? Pre HE's were flat heads. When I went down to Charles Servedio's he had a brand new head that had a HE style combustion camber but much deeper than the 1989 5.3 HE head I brought down to him. Appears Jaguar used a combination of heads and pistons / stroke to achieve different compression numbers on different applications.

That would be so much fun to play around with testing a pre-HE head. I would love to know how much can be improved outside engine itself all the way from 100% bone stock. 3 inch trumpets, non-paper air filters, larger throttle body, ported intake.

LOVE your videos // i like the he head way better with a bit of chamber smoothing David vizard and another guy Charles something did one on YT it looks logical ridding one of sharp edges [ detonation area ]and also improving flow

Intersting. Might you make a casting of the TWR head ports for later reference? Also I wonder what the exhaust port REVERSE flows... I .e hoping reverse flow is bad vs outgoing flow (reversion resistant). I know Ole has those high lift cams & trays... perhaps an easy off the shelf solution to raise the lift on the TWR heads? Have you potentially looked into any places in the area that might offer industrial CAT scanning which would allow one to slice a head and see wall thickness virtually?

That's a very good explanation video, thanks! In order to torque the crankshaft nut, the flywheel needs to be locked: Do you use a special tool for that? One could use a screwdriver to lock the starter ring, but I don't think that's the best way.

Sorry but you could do better without the music, I can´t hear what you say.

Hay remember me! Im the one who you sent the broken tensioner too. Well I infact did join the Airforce and lost the tensioner in moving around. LOL

Would like to see a discussion on piston wear and suitability for reuse. I have a set of used 9:1 UK pistons I'd like to use to replace the 7:1 US pistons in my pre-HE engine. None have severe damage as seen in the examples you showed. What do I measure and how?

Product is amazing Sealed up the head gaskets on my 98’ Ford Expidition and my 03’ Ford F-150

Very interesting I always wanted a talk on these engines pistons

He V12 drop vave seats and suck because they have India Made heads valves and pistons....earlier Pre HE v12 are the only war to go Jag V12!

Super cool information!

Are there any differences in the compression ratios between these pistons? The last of the pre HE engines had a 10:1 compression ratio and are these pistons available to buy anywhere?

You are an absolute machine,, precise,, perfect and beautiful results.. keep up the great work.. and please make sure you have someone to pass this too..

IDK if it's just me, but the music track is there, but not the narration.... Might need to check this one & re-upload if it's not just me Robert.

There's always the sun shining at Camp Chaos.

Will it start on a cool morning if you disconnect the air. Temp sensor?

Great video, Bob.

Interesting .

I kinda ran into a similar situation. After a through spotless block and liner cleaning, and making the O.E.M. cylinder liner stud clamps , I took my block down to our local race shop. He was able to get that V-12 up into his Sunnen machine just to have the glaze removed and tidy the liners for the Std. cast rings. These were the stock 1986 Jaguar liners. Three had bad casting porosity pits at the bottom of the stroke which the rings covered. We discussed it and decided it was not acceptable but it would get buy. I was fortunate to stumble onto and buy a brand new set of O.E.M. liners off e-bay and sold my old ones getting my honing money back which basically paid for the new liners. I'm guessing after watching many of these East Indian machining videos that more than probably not is where much of this new cast iron is coming from. Down and dirty and quickly produced in the barefooted dirt floor shops with no Quality Control Inspection or in process inspection while machining. It's amazing the ground they can cover with experience and crude dirty hand made tools and a steel ruler, feeler gauges and caliper. I don't believe they maintain precision boring machines or Sunnen Hones. I have a fellow up here in Sultan, Washington Jim Flower LLC Flower Racing LLC. He does a lot of FFA air cooled boxer cylinders and Harley-Davidson work. Google and call him, excellent, excellent innovative machinist and shop owner. They will be perfect when you get them back.

thither is a YT guy with engine machine shop built his own gas grill head modified straitening rig not all that hard and it works well .makes sense to me

Keep 'em coming please Bob, technical vs story telling content is perfect. Jeff

I'm no machinist, but I assume after the liners have been press fit, they will have to be bored or honed with a torque plate anyway. How round are the pistons?

i alway put oil in the gas 24:1 or so when i fool with old cars not run in years i know its not cool on new engine but it will clean up after a bit of lucas fuel injector cleaner and a hot lap of 10. ill say it again i hate direct drive starters lol God bless love this show

lol that helper ant much help lol i can not remember .i fell your pain. my lord those cats need a gear reduction starter bad when i buy one fist thing i get is a new starter if its got that direct drive junk still i loath those things

What is the Jag OEM tolerance on out of round and taper? I would think +1/-0 mil/thou of an inch would be acceptable.

Nice work Bob. I hear more and more about poor quality aftermarket parts. Sad. What is that interesting board hanging on the wall above the black Craftsman tool chest?